49840857577 has 4 divisors (see below), whose sum is σ = 56960980096. Its totient is φ = 42720735060.

The previous prime is 49840857553. The next prime is 49840857581. The reversal of 49840857577 is 77575804894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49840857577 - 2⁷ = 49840857449 is a prime.

It is a super-2 number, since 2×49840857577² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49840857527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560061249 + ... + 3560061262.

It is an arithmetic number, because the mean of its divisors is an integer number (14240245024).

Almost surely, 2^49840857577 is an apocalyptic number.

It is an amenable number.

49840857577 is a deficient number, since it is larger than the sum of its proper divisors (7120122519).

49840857577 is an equidigital number, since it uses as much as digits as its factorization.

49840857577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7120122518.

The product of its (nonzero) digits is 79027200, while the sum is 64.

It can be divided in two parts, 498408 and 57577, that added together give a triangular number (555985 = T₁₀₅₄).

The spelling of 49840857577 in words is "forty-nine billion, eight hundred forty million, eight hundred fifty-seven thousand, five hundred seventy-seven".